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⑥极化角曲线,如图5所示。(2)可用“参照法”。采用“常规法”接收卫星数字电视,通常需要有一台能显示信号强度的IRD,(综合解码卫星接收机)并需要有一定的实践经验,如果没有上述条件,可用“参照法”寻找卫星。所谓“参照法”就是以已经接收到的一颗卫星A为参照物来寻找另一颗新的卫星B,其方法是:计算卫星A与卫星B的方位角差及仰角差,利用指南针和倾角仪调整天线,再按“常规法”有关步骤耐心细调天线的方位角、仰角及馈源极化角、焦距,使IRD
⑥ polarization angle curve, shown in Figure 5. (2) available “reference method ”. The use of “conventional method ” to receive satellite digital TV, usually need to have an IRD can show the signal strength, (integrated decoding satellite receiver) and need some practical experience, if not the above conditions, available “reference method Find satellites. The so-called ”reference method “ is based on a received satellite A as a reference to find another new satellite B, the method is: calculate the satellite A and satellite B azimuth difference and elevation difference, the use of compass And inclinometer to adjust the antenna, and then press the ”conventional method " the steps of patiently fine-tuning the antenna azimuth, elevation and polarization angle of the feed, the focal length, the IRD